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SUMMARY:Exotic orders from multispin interactions: From heavy fermions to
chiral spin liquids
DTSTART;VALUE=DATE-TIME:20180911T103000Z
DTEND;VALUE=DATE-TIME:20180911T113000Z
DTSTAMP;VALUE=DATE-TIME:20190222T140345Z
UID:indico-event-6617@cern.ch
DESCRIPTION:Upon approaching a Mott transition from the insulating side\,
fermions get progressively more delocalized resulting in higher order spin
interactions (e.g.\, 3-spin and 4-spin exchange) becoming more important.
This has been proposed as a driver for novel magnetic orders in solid Hel
ium-3\, and spin liquid behavior in quasi-2D organic materials as well as
Helium-3 on graphite. I will discuss analogues of such physics in two new
settings – Heavy fermion materials near the small-to-large Fermi surfac
e transition\, and Mott insulators formed from correlation effects in topo
logical bands. For the heavy fermion materials\, I will discuss how multis
pin interactions could lead to quadrupolar and coexisting octupolar orders
. For the topological Mott insulators I will discuss how chiral spin liqui
ds emerge from non-coplanar spin crystals.\n\nhttps://indico.tifr.res.in/i
ndico/conferenceDisplay.py?confId=6617
LOCATION: AG 69
URL:https://indico.tifr.res.in/indico/conferenceDisplay.py?confId=6617
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